/* ═══════════════════════════════════════════════════════════════
   EXPERIENCE.CSS — TRACA Core Visual System v2
   Shared across Synagogue & Tombeau experiences
   ═══════════════════════════════════════════════════════════════ */

/* ─── PARTICLES ─────────────────────────────────────────────── */
#particles-canvas {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 2s ease;
}
#particles-canvas.visible { opacity: 1; }

/* ─── INTRO OVERLAY & UNIFIED LOADER ─────────────────────────── */
#intro-overlay, #c-loader {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: #0a0a09; /* var(--bg-dark) fallback */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

.intro-inner, .c-loader-inner {
    max-width: 600px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Logos agrandis partout */
.intro-logo, .c-loader-logo {
    width: 80px !important;
    height: 80px !important;
    object-fit: contain;
    margin-bottom: 2rem;
    opacity: 0.8;
    filter: drop-shadow(0 0 20px rgba(212, 168, 83, 0.2));
}

/* Ornements unifiés */
.intro-ornament-top, .intro-ornament-bottom, .c-loader-orn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    width: 100%;
}
.intro-ornament-top, .c-loader-orn:first-of-type { margin-bottom: 2.5rem; }
.intro-ornament-bottom, .c-loader-orn:last-of-type { margin-top: 2.5rem; }

.intro-ornament-line, .c-loader-orn-line {
    height: 1px;
    width: 80px;
    background: rgba(212, 168, 83, 0.4); /* var(--gold-dim) fallback */
}

.star-of-david, .c-loader-orn-gem {
    color: rgba(212, 168, 83, 0.6);
    font-size: 0.9rem;
}

/* Hiérarchie de texte unifiée */
.intro-eyebrow, .c-loader-eyebrow {
    display: block;
    font-family: 'Cinzel', serif;
    font-size: 0.75rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: rgba(212, 168, 83, 0.6);
    margin-bottom: 2.5rem;
}

.intro-title, .c-loader-title {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-family: 'Cinzel', serif;
    font-size: clamp(2.5rem, 9vw, 5rem);
    font-weight: 700;
    line-height: 1.05;
    color: #e7ba80; /* var(--gold) fallback */
    margin: 0;
    text-shadow: 0 0 40px rgba(212, 168, 83, 0.3);
}

.intro-subtitle, .c-loader-subtitle {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: 1.3rem;
    color: rgba(212, 168, 83, 0.6);
    margin: 0.5rem 0 0;
}

.intro-hint, .c-loader-hint {
    margin-top: 3rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

/* Enter button */
#enter-btn {
    margin-top: 2.5rem;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: transparent;
    border: 1px solid rgba(212, 168, 83, 0.5);
    color: var(--gold);
    padding: 1rem 2.5rem;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}
#enter-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold-dim);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: -1;
}
#enter-btn:hover {
    color: black;
    border-color: var(--gold-dim);
    box-shadow: 0 0 40px rgba(212, 168, 83, 0.25);
}
#enter-btn:hover::before { transform: scaleX(1); }

.enter-btn-arrow {
    transition: transform 0.4s ease;
}
#enter-btn:hover .enter-btn-arrow {
    transform: translateY(4px);
}

/* ─── FIXED UI ───────────────────────────────────────────────── */
.back-btn {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 500;
    opacity: 0;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-dim);
    text-decoration: none;
    transition: color 0.3s;
}
.back-btn:hover { color: var(--gold); }

#progress-container {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 500;
    opacity: 0;
}

#progress-bar {
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, transparent, var(--gold));
}

#progress-label {
    position: fixed;
    top: 1.5rem;
    right: 2rem;
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--gold-dim);
    opacity: 0.7;
}

/* Audio toggle */
#audio-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;        /* ⇐ déplacé bottom-RIGHT pour éviter le Director switcher */
    z-index: 500;
    opacity: 0;
    background: rgba(10,10,9,0.6);
    border: 1px solid rgba(212,168,83,0.2);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-dim);
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition: all 0.3s;
}
#audio-toggle:hover {
    border-color: var(--gold-dim);
    color: var(--gold);
}

/* Chapter nav dots */
#chapter-nav {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 500;
    opacity: 0;
}

#chapter-nav ul {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

#chapter-nav li button {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1px solid var(--gold-dim);
    background: transparent;
    cursor: pointer;
    transition: all 0.35s ease;
    display: block;
}

#chapter-nav li.active button {
    background: var(--gold);
    border-color: var(--gold);
    transform: scale(1.6);
    box-shadow: 0 0 12px rgba(212, 168, 83, 0.6);
}

/* ─── SHARED HOME BUTTON ─────────────────────────────────────── */
.btn-hud-home {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(231,186,128,0.3);
    background: rgba(14,9,5,0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #c9a96e;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0; /* Hidden by default, shown via transition */
    pointer-events: none;
}
.btn-hud-home.visible {
    opacity: 1;
    pointer-events: auto;
}
.btn-hud-home:hover {
    background: rgba(231,186,128,0.15);
    border-color: rgba(231,186,128,0.6);
    transform: scale(1.05);
}
.btn-hud-home svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

/* ─── AR BUTTON ─────────────────────────────────────────────── */
#ar-cta-wrapper {
    position: fixed;
    bottom: 5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 500;
    text-align: center;
    width: 90%;
    max-width: 480px;
}

#ar-cta-wrapper.hidden { display: none; }

#ar-invoke-btn {
    background: linear-gradient(135deg, rgba(212,168,83,0.12), rgba(212,168,83,0.04));
    border: 1px solid rgba(212, 168, 83, 0.5);
    color: var(--gold);
    padding: 1.2rem 2rem;
    font-family: var(--font-heading);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    backdrop-filter: blur(12px);
    transition: all 0.4s ease;
}
#ar-invoke-btn:hover {
    background: rgba(212,168,83,0.15);
    box-shadow: 0 0 60px rgba(212,168,83,0.2);
    border-color: var(--gold);
}

.ar-btn-glyph  { font-size: 1.2rem; opacity: 0.7; }
.ar-btn-main   { font-size: 0.85rem; letter-spacing: 0.15em; text-transform: uppercase; }
.ar-btn-caption { font-family: var(--font-body); font-size: 0.75rem; font-style: italic; opacity: 0.6; }

#ar-no-support {
    display: none;
    margin-top: 1rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

/* ─── 3D SCENE ───────────────────────────────────────────────── */
#scene-3d {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: var(--bg-dark);
}

model-viewer {
    width: 100%;
    height: 100%;
    --poster-color: transparent;
    --progress-bar-color: transparent;
}

/* Vignette overlay (darkens edges to frame the model) */
.scene-vignette {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    box-shadow: inset 0 0 150px rgba(0,0,0,0.65);
}

/* Fog bars top & bottom blend model into background */
.scene-fog-top {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 15%;
    z-index: 3;
    pointer-events: none;
    background: linear-gradient(to bottom, var(--bg-dark), transparent);
}
.scene-fog-bottom {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 15%;
    z-index: 3;
    pointer-events: none;
    background: linear-gradient(to top, var(--bg-dark), transparent);
}

/* ─── STORY / CHAPTERS ───────────────────────────────────────── */
#story-container {
    position: relative;
    z-index: 10;
    pointer-events: none;
}

.chapter {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 10vh 5vw;
}

/* ─── CHAPTER CARDS ─────────────────────────────────────────── */
.chapter-card {
    pointer-events: auto;
    max-width: 440px;
    background: rgba(10, 10, 9, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-left: 1px solid var(--gold-faint);
    padding: 2.5rem;
    opacity: 0;
    transform: translateY(40px);
    /* GSAP animates opacity + transform */
}

.chapter-card--right {
    margin-left: auto;
    border-left: none;
    border-right: 1px solid var(--gold-faint);
}

.chapter-card--center {
    margin: 0 auto;
    text-align: center;
    border: 1px solid var(--gold-faint);
    max-width: 500px;
}

/* Card inner elements */
.chapter-tag {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--gold-dim);
    margin-bottom: 0.8rem;
}
.chapter-num  { color: var(--gold); }
.chapter-ornament {
    color: var(--gold-dim);
    opacity: 0.5;
    margin-bottom: 1.2rem;
    letter-spacing: 0.1em;
}

.chapter-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    font-weight: 600;
    line-height: 1.15;
    color: var(--gold);
    margin: 0 0 1.5rem;
}

.chapter-text {
    font-family: var(--font-body);
    font-size: 1.1rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.78);
    margin-bottom: 1rem;
}

/* Quote block */
.chapter-quote {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 1.15rem;
    border-left: 2px solid var(--gold);
    padding-left: 1.2rem;
    margin: 1.5rem 0;
    color: var(--gold);
    line-height: 1.5;
}
.chapter-quote cite {
    display: block;
    margin-top: 0.6rem;
    font-size: 0.85rem;
    opacity: 0.6;
    font-style: normal;
}

/* Detail pills */
.chapter-detail {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold-dim);
    opacity: 0.7;
}
.detail-sep { opacity: 0.4; }

/* Stats grid */
.chapter-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
    text-align: center;
}
.stat-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--gold);
    margin-bottom: 0.2rem;
}
.stat-label {
    font-family: var(--font-heading);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gold-dim);
    opacity: 0.7;
}

/* Timeline */
.chapter-timeline {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    border-left: 1px solid var(--gold-faint);
    padding-left: 1.2rem;
}
.timeline-item { font-family: var(--font-body); font-size: 0.95rem; }
.tl-date  { display: block; color: var(--gold); font-size: 0.85rem; margin-bottom: 0.1rem; }
.tl-event { color: rgba(255,255,255,0.65); }

/* Credits */
.chapter-credits {
    margin-top: 2rem;
    border-top: 1px solid var(--gold-faint);
    padding-top: 2rem;
    font-family: var(--font-heading);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.4;
}

/* ─── MOBILE ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .chapter { 
        padding: 8vh 4vw; 
        margin-bottom: 200vh; /* Espace gigantesque entre les chapitres */
    }
    .chapter--final {
        margin-bottom: 5vh; 
    }

    .chapter-card,
    .chapter-card--right {
        max-width: 90vw;
        margin-left: 0;
        border-left: 1px solid var(--gold-faint);
        border-right: none;
        padding: 1.8rem;
    }

    .chapter-card--center { margin: 0 auto; border: 1px solid var(--gold-faint); }

    #chapter-nav { right: 1rem; }

    #ar-cta-wrapper { bottom: 3rem; }

    .chapter-title { font-size: 1.8rem; }
}